| ( | x | − | 300 | ) | ( | x | − | 300 | ) | ÷ | 600 | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | ÷ | 200 | = | 1083 625 |
| 方程左边 = | x | ( | x | − | 300 | ) | × | 1 600 | − | 300 | ( | x | − | 300 | ) | × | 1 600 | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | ( | x | − | 300 | ) | × | 1 600 | − | 1 2 | ( | x | − | 300 | ) | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | x | × | 300 | × | 1 600 | − | 1 2 | ( | x | − | 300 | ) | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | x | × | 1 2 | − | 1 2 | ( | x | − | 300 | ) | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 2 | x | − | 1 2 | x | + | 1 2 | × | 300 | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 2 | x | − | 1 2 | x | + | 150 | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 | x | + | 150 | − | ( | x | − | 100 | ) | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 | x | + | 150 | − | x | ( | x | − | 100 | ) | × | 1 200 | + | 100 | ( | x | − | 100 | ) | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 | x | + | 150 | − | x | ( | x | − | 100 | ) | × | 1 200 | + | 1 2 | ( | x | − | 100 | ) |
| = | x | x | × | 1 600 | − | 1 | x | + | 150 | − | x | x | × | 1 200 | + | x | × | 100 | × | 1 200 |
| = | x | x | × | 1 600 | − | 1 | x | + | 150 | − | x | x | × | 1 200 | + | x | × | 1 2 | + | 1 2 |
| = | x | x | × | 1 600 | − | 1 2 | x | + | 150 | − | x | x | × | 1 200 | + | 1 2 | ( | x | − | 100 | ) |
| = | x | x | × | 1 600 | − | 1 2 | x | + | 150 | − | x | x | × | 1 200 | + | 1 2 | x | − | 1 2 |
| = | x | x | × | 1 600 | − | 1 2 | x | + | 150 | − | x | x | × | 1 200 | + | 1 2 | x | − | 50 |
| = | x | x | × | 1 600 | − | 0 | x | + | 100 | − | x | x | × | 1 200 |
| x | x | × | 1 600 | + | 100 | − | x | x | × | 1 200 | = | 1083 625 |
| x1= | √737004 5 |